package com.sky.aspect;

import com.sky.annotation.AutoFile;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MemberSignature;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Slf4j
@Component
public class AutoFileAspect {


    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFile)")
    public void autoFilePointCut(){}


    @Before("autoFilePointCut()")
    public void autoFile(JoinPoint joinPoint)  {
        log.info("开始公共类字段自动填充");

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();//方法签名对象
        AutoFile autoFile = signature.getMethod().getAnnotation(AutoFile.class);//获取方法上的注解

        OperationType operationType = autoFile.value();//注解对象

        //获取方法上的参数
        Object[] args = joinPoint.getArgs();
        if(args ==null || args.length==0){
            return;
        }

        Object entity = args[0];


        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();


        if(operationType==OperationType.INSERT){
            try {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME,LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setCreateTime.invoke(entity,now);
                setCreateUser.invoke(entity,currentId);
                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        if(operationType==OperationType.UPDATE){
            try {

                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }


    }
}
